American Weigh
Scales, Inc.
ACPro Series
ACPro-200 (200g x 0.01g)
ACPro-500 (500g x 0.1g)
ACPro Series Manual
Thank you for purchasing the ACPro Series. Please
read all operating instructions carefully before use.
Scales are precision instruments and should always be
handled with proper care. To ensure years of reliable
service, keep these simple tips in mind:
• Do not exceed the scales maximum capacity.
Overloading your scale can permanently damage it!
• Avoid exposure to extreme heat or cold. Scales
perform best at normal room temperature.
If temperatures have changed dramatically,
recalibration may be necessary.
• Allow your scale to warm up for 30-60 seconds
before performing calibration (if available).
• Store your scale in a clean, dry location. Dust, dirt,
and moisture can accumulate on the weighing
sensors and electronics causing innacuracy or
malfunction.
• Avoid using your scale in close proximity to strong
radio wave emitting devices such as computers, cash
registers, and cordless phones.
• Always weigh on a at and level surface, free from
vibrations and drafts. The corner of a room is usually
the most stable.
• Gently apply all items to be weighed. Do not drop
items onto the weighing platform.
• Avoid dropping your scale. The warranty does not
cover damage due to rough treatment or overload.
I. SCALE OPERATION
Place the scale on a horizontal at surface and set the scale
platform on the weighing surface.
1. Press [ ON/OFF ] key.
2. Wait until “0.0g” or “0.00g” is displayed.
3. Place the object(s) on the weighing tray.
4. By pressing the [ MODE ] key, you can switch the weighing
unit displayed on the bottom right.
5. The cover / expansion tray can be used by following the
TARE WEIGHING instructions below.
II. TARE WEIGHING
1. Turn on the scale as described above.
2. Place the cover / expansion tray on the scale platform.
3. Press the [ TARE ] button. “0.0g” or ”0.00g” will be displayed.
4. You can now add items to the tray to obtain just the weight
of the contents.
5. When all items are removed, a negative number will be
displayed. Press [ TARE ] again to zero the scale.
III. COUNTING MODE
1. Press the [ ON/OFF ] key to turn the scale on.
2. Place a sample quantity of the items being weighed on
the platform. This quantity should either be 25, 50, 75, or 100
pieces.
3. Once the weight is stable, press and hold the [ PCS ] key to
enter counting mode setup.
3. The current sample size will be displayed on the bottom
right of the LCD.
4. Press the MODE key to change it between 25, 50, 75, or 100
and press PCS to conrm. The count will be displayed on the
bottom right of the LCD. You may now add more items are
remove items and the count will update automatically.
IV. CALIBRATION
1. Press the [ ON/OFF ] key to turn the scale on.
2. Wait for the display to show “0.0g” or “0.00g” then press and
hold the [ MODE ] key for 3 seconds until the display shows
“CAL” then release.
3. Press the [ MODE ] key again, and the LCD will ash the rst
required calibration weight. Place the required weight on the
middle of the platform.
4. The LCD will ash then ash the second required calibration
weight. Place the required weight on the middle of the
platform.
5. The LCD will display “PASS” and return to normal weighing
mode. Calibration is complete. You may now remove the
weight and turn o the scale.
IV. TROUBLESHOOTING
The primary reasons for inaccuracy or malfunction are low
batteries, incorrect calibration, overload or operating on an
unstable surface. Please keep this in mind and maintain and
operate your scale properly. This scale is a precise instrument
and must be handled with the utmost care and caution.
[Display] Elimination of errors
[Lo] Change the batteries.
[OUT2] Recalibrate the scale as shown above.
[O_Ld] You are overloading the scale. Remove the excessive
load immediately!
[UnSE] Use the scale in a more stable position
Model AC PRO-200 AC PRO-500
Capacity 200g / 128.60dwt /
1000.0ct / 3086.4gn
500g / 17.64oz /
16.08ozt / 321.5dwt
Resolution 0.01g / 0.001dwt / 0.1ct
/ 0.2gn
0.1g / 0.01oz /
0.01ozt / 0.1dwt
Tolerance ±0.02g / 0.002dwt /
0.2ct / 0.4gn
±0.2g / 0.02oz / 0.02ozt
/ 0.2dwt
Weighing Units
g, dwt,ct, gn g, oz, ozt, dwt
Calibration Weight (not
Included)
100g and 200g
(calibrates linearly at 100g
and 200g)
500g
(calibrates at 500g)
Platform Dimensions
(inches)
2.5 x 3.0” Stainless Steel
Scale Dimensions
(inches)
2.75 x 4.75 x 0.74”
Power
2 x AAA Batteries (included)
Warranty
10 Year Warranty
Specications
American Weigh Scales, Inc.
3285 Saturn Court
Norcross, GA 30092
www.awscales.com
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